Stuffing-box



K D A L G H A I (No Model.)

STUFFING BOX.

No. 337,333. Patented M3129, 1333.

JIM [N703 N, PETERS, Pholo-Li\ho UNITED STATES ATENT OFFICE.

ALEXANDER H. CLARK, OF FOND DU LAO, WISCONSIN STUFFlNG-BOX.

SH-JCIFICATION forming part of Letters Patent N 0. 357,663, dated March 9, 1886,

Application filed January 25, 1886. Serial No. 189,681.

To all whom it may concern.-

Be it known that I, ALEXANDER H. CLARK, of Fond du Lac, in the county of Fond du Lac and State of Wisconsin, have invented certain new and useful Improvements in Stuffing- Boxes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to an improvement in stufing-boxes.

The object is to provideastuffing-box adapted to pack a sliding rod entering a steam or liquid chamber, in which the pressure of the steam or liquid shall be utilized in forming a tight joint, and in which construction of the parts shall be simple and effective in centering the piston and taking up wear.

With these ends in View my invention consists in a removable cylinder having a conicalshaped end adapted to engage a conicalshaped seat in the female gland, and provided with a series of perforations in its sides and channels leading therefrom to the apex of the conical-shaped end around the piston-rod.

My invention further consists in a removable cylinder of the above-mentioned character formed in half-sections.

My invention further consists in certain features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a longitudinal section showing the parts in position, and Fig. 2 is a detached View of the removable cylinder.

A represents a cylinder-head, in which is formed the perforation a, to admit the pistonrod.

0 is the female gland of the stnffing-box, and is secured firmly to or formed integral with the cylinder-head, its axis being on a line with the center of the perforation a. The end of the chamber a in the female gland toward the cylinder is conical-shaped, as shown at 1). Within the chamber a is located a longitudinally-sliding cylinder, D, adapted to loosely fit within the chamber, and provided with a conical-shaped end, d, adapted to fit the conical-shaped end of the chamber. The cylinder 1) is further provided with a series of (No model.)

elongated slots, E, opening from the outside of the cylinder into the hollow chamber e within the cylinder, and with a series of channels, F, leading from the slots E to the apex of the conical end ot the cylinder.

G represents the follower or male gland of the stuffing-box. It is provided with aflange, 9, through which it is secured to the female gland of the stuffing-box by draw-bolts H.

The piston-rod B extends loosely through the cylinder-head, centrally through the cyl= inder D, and through the male gland or follower. It is packed within the cylinder D by textile packing I, the end of which comes in contact with larger rings of textile packing K, located between the outer end of the cylinder D and the face of the male gland or follower.

The cylinder D is preferably formed in halfsections, to admit of the packing I being readily removed and replaced.

The steam or liquid which escapes from the cylinder, steam-chest, or other steam or liquid receptacle through the cylinder-head past the piston-rod follows in the channels 13 to the slots E, and from thence through the slots E into the chamber within the cylinder D, where it presses on the entire outer surface of the packing I, forcing it into snug contact with the piston-rod. The ribsf. between the channels F on'the end of the cylinder D, engage the conical-shaped end of the chamber within the female gland and force the apex of the cylinder D, and hence the pistonrod B, to- .ward the center of the perforation a in the cylinder-head.

The construction as a whole is simple and eminently effective.

It is evident that slight changes might be resorted to in the form and arrangement of the several parts Without departing from the spirit and scope of my invention; hence I do not wish to limit myself strictly to the construction herein set forth; but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In astutling-box, the combination, with a male and female gland and a piston-rod eX- tending centrally through the same, of a hollow longitudinallymovable cylinder located within the female gland and provided with ICQ openings extending through its walls and 1 cylinder, and flexible packing on the pistonchannels extending from the outer ends of the openings to the edge in close proximity to the piston-rod, and flexible packing on the pistonrod within the movable cylinder, substantially as set forth.

2. In astuffing-box, the combination, with a male and female gland, the latter having a conical-shaped seat on the end toward the cylinder, of a removable hollow cylinder located on the piston-rod within the female section andprovided with a conical-shaped end adapted to engage the said conical-shaped seat, and with a series of channels leading from the apex of the conical-shaped end on the outer surface of the cylinder to a series of openings through the walls of the movable rod within the movable cylinder and on the end thereof, substantially as set forth.

3. In a stuffing-box, the combination, with the male and female glands and the pistonrod with its packing, substantially as set forth, of the removable cylinder constructed in half sections and provided with the openings and channels, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

ALEXANDER H. LARK, Witnesses:

W. F. strewn, C. V. GWIN. 

